Engine 3.8 vs 3.6 Pentastar

wayoflife said:
5.38's will give you more power and is what you may enjoy more but, the pinion gets to be really really small in a Dana 44. Granted, I was running 40's at the time but, I have blown mine out and could see how it could happen even with 37's. I personally wouldn't recommend anything higher than a 5.13 in a Dana 44.
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Thx I figured as much....I think 5.13 will do....any suggestions on manufactures to stick with as far as gears go or does it matter?
 
uhporkchop said:
Thx I figured as much....I think 5.13 will do....any suggestions on manufactures to stick with as far as gears go or does it matter?
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Pretty much all the gears out there are made by the same manufacturer in South Korea. The only difference is the box they come in.
 
wayoflife said:
Pretty much all the gears out there are made by the same manufacturer in South Korea. The only difference is the box they come in.
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Hm... that's actually good info. I know they are heat treated and lapped but is there any value to having them cryo-treated if you can get it done on the cheap before putting them in?
 
TacPen said:
Hm... that's actually good info. I know they are heat treated and lapped but is there any value to having them cryo-treated if you can get it done on the cheap before putting them in?
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Not that I know of. You can't make a tiny pinion with about one tooth on the ring gear be as strong as a bigger one with multiple teeth on the ring gear just by freezing it. In a Dana 44, I personally would not run anything bigger than a 5.13 and in a Dana 30, a 4.88. But, that's just me.
 
wayoflife said:
Not that I know of. You can't make a tiny pinion with about one tooth on the ring gear be as strong as a bigger one with multiple teeth on the ring gear just by freezing it. In a Dana 44, I personally would not run anything bigger than a 5.13 and in a Dana 30, a 4.88. But, that's just me.
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All great info WOL....thx
 
TacPen said:
Hm... that's actually good info. I know they are heat treated and lapped but is there any value to having them cryo-treated if you can get it done on the cheap before putting them in?
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Im not sure where you're from, but there's a place near oceanside that does cryo treatment. Its pretty cheap to do and according to a couple 4wd magazines and articles i have read(obviously no personal experience, but then again i dont know anyone on here that has had this done) it will give around 30% more strength. Not sure how they got those numbers, but there is no doubt that temperature treatment hardens steel. As mentioned it doesn't make a 44 into a 60....but it can only help and for cheep! :twocents:
 
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